Which test is validated for identifying ligamentous instability of the cervical spine?

Which test is validated for identifying ligamentous instability of the cervical spine?

• A. Spurling's Test
• B. Sharp-Purser Test
• C. Neurological Exam
• D. Upper Limb Tension Test

Answer: (B)

The Sharp-Purser Test is specifically designed to assess ligamentous instability in the cervical spine, particularly concerning the atlantoaxial joint and the integrity of the transverse ligament. This test is particularly relevant in cases where instability is suspected due to conditions such as trauma, rheumatoid arthritis, or congenital anomalies. During the Sharp-Purser Test, the therapist applies a posterior force to the forehead while stabilizing the C2 vertebra with the other hand. A positive test is indicated by excessive movement or a sensation of 'clunking' at the cervical spine, which suggests that the transverse ligament may be compromised. This test is critical for identifying instability that may predispose a patient to neurological compromise, making it a validated and essential part of the clinical examination for assessing cervical spine stability. The other tests mentioned, while useful in their contexts, do not specifically target ligamentous instability in the same way. Spurling's Test is primarily utilized to assess nerve root compression, the neurological exam focuses on identifying nerve function and integrity rather than ligamentous stability, and the Upper Limb Tension Test is designed to assess nerve tension and mobility rather than instability of cervical ligaments. Thus, the Sharp-Purser Test is the most appropriate choice for evaluating ligamentous instability

The Sharp-Purser Test is specifically designed to assess ligamentous instability in the cervical spine, particularly concerning the atlantoaxial joint and the integrity of the transverse ligament. This test is particularly relevant in cases where instability is suspected due to conditions such as trauma, rheumatoid arthritis, or congenital anomalies.

During the Sharp-Purser Test, the therapist applies a posterior force to the forehead while stabilizing the C2 vertebra with the other hand. A positive test is indicated by excessive movement or a sensation of 'clunking' at the cervical spine, which suggests that the transverse ligament may be compromised. This test is critical for identifying instability that may predispose a patient to neurological compromise, making it a validated and essential part of the clinical examination for assessing cervical spine stability.

The other tests mentioned, while useful in their contexts, do not specifically target ligamentous instability in the same way. Spurling's Test is primarily utilized to assess nerve root compression, the neurological exam focuses on identifying nerve function and integrity rather than ligamentous stability, and the Upper Limb Tension Test is designed to assess nerve tension and mobility rather than instability of cervical ligaments. Thus, the Sharp-Purser Test is the most appropriate choice for evaluating ligamentous instability